Scientific Papers

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Acoustic telemetry reveals cryptic residency of whale sharks

Acoustic telemetry reveals cryptic residency of whale sharks

Published on 01. April 2015 Acoustic telemetry reveals cryptic residency of whale sharks E. Fernando Cagua, Jesse E. M. Cochran, Christoph A. Rohner, Clare E. M. Prebble, Tane H. Sinclair-Taylor, Simon J. Pierce, Michael L. Berumen ABSTRACT: Although whale sharks (Rhincodon typus) have been documented to move thousands of kilometres, they are most frequently observed

Levels of arsenic, cadmium, lead and mercury in mobulid rays

Levels of arsenic, cadmium, lead and mercury in mobulid rays

Published online on 16. March 2015 Levels of arsenic, cadmium, lead and mercury in the branchial plate and muscle tissue of mobulid rays Michelle S.M. Ooi, Kathy A. Townsend, Michael B. Bennett, Anthony J. Richardson, Daniel Fernando, Cesar A. Villa, Caroline Gaus ABSTRACT: Mobulid rays are targeted in fisheries for their branchial plates, for use

Ginglymostoma unami, a new species of nurse shark from the Tropical Eastern Pacific

Ginglymostoma unami, a new species of nurse shark from the Tropical Eastern Pacific

Published in March 2015 Ginglymostoma unami sp. nov. (Chondrichthyes: Orectolobiformes: Ginglymostomatidae): a new species of nurse shark from the Tropical Eastern Pacific Luis Fernando Del Moral-Flores, Emmanuel Ramírez-Antonio, Arturo Angulo, Gerardo Pérez-Ponce de León ABSTRACT: A new species of shark belonging to the family Ginglymostomatidae is herein described; the new species show a wide distribution

Urobatis pardalis, a new species of round stingray from the tropical Eastern Pacific

Urobatis pardalis, a new species of round stingray from the tropical Eastern Pacific

Nueva especie del género Urobatis (Myliobatiformes: Urotrygonidae) del Pacífico oriental tropical Luis Fernando Del Moral-Flores, Arturo Angulo, Myrna I. López, William A. Bussing ABSTRACT: A new species of Urobatis (Myliobatiformes: Urotrygonidae) from the tropical Eastern Pacific. A new species of round stingray, Urobatis pardalis sp. nov., is described from material collected in the Pacific coast

Estimating apparent survival of white sharks in central California using mark-recapture methods

Estimating apparent survival of white sharks in central California using mark-recapture methods

Published on 01. April 2015 Estimating apparent survival of sub-adult and adult white sharks (Carcharodon carcharias) in central California using mark-recapture methods Paul E. Kanive, Jay J. Rotella, Salvador J. Jorgensen, Taylor K. Chapple, Scot D. Anderson, A. Peter Klimley, Barbara A. Block ABSTRACT: Quantifying life history parameters of marine top predators is challenging, as

White Sharks Exploit the Sun during Predatory Approaches

White Sharks Exploit the Sun during Predatory Approaches

Published in April 2015 White Sharks Exploit the Sun during Predatory Approaches Charlie Huveneers, Dirk Holman, Rachel Robbins, Andrew Fox, John A. Endler, Alex H. Taylor ABSTRACT: There is no conclusive evidence of any nonhuman animal using the sun as part of its predation strategy. Here, we show that the world’s largest predatory fish—the white

Population and individual foraging patterns of two hammerhead sharks

Population and individual foraging patterns of two hammerhead sharks

Published online on 25. March 2015 Population and individual foraging patterns of two hammerhead sharks using carbon and nitrogen stable isotopes P. Loor-Andrade, F. Galván-Magaña, F. R. Elorriaga-Verplancken, C. Polo-Silva, A. Delgado-Huerta ABSTRACT: Rationale Individual foraging behavior is an important variable of predators commonly studied at the population level. Some hammerhead shark species play a

Scyliorhinus ugoi, a new species of catshark from Brazil

Scyliorhinus ugoi, a new species of catshark from Brazil

Published on 25. March 2015 Scyliorhinus ugoi, a new species of catshark from Brazil (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) KARLA D. A. SOARES, OTTO F. B. GADIG & ULISSES L. GOMES ABSTRACT: A new species of catshark (Carcharhiniformes, Scyliorhinidae), Scyliorhinus ugoi sp. nov., is described from off Northeastern and Southeastern Brazil. The new species is closest to

Whale sharks target dense prey patches of sergestid shrimp off Tanzania

Whale sharks target dense prey patches of sergestid shrimp off Tanzania

Published online on 17. March 2015 Whale sharks target dense prey patches of sergestid shrimp off Tanzania Christoph A. Rohner, Amelia J. Armstrong, Simon J. Pierce, Clare E. M. Prebble, E. Fernando Cagua, Jesse E. M. Cochran, Michael L. Berumen, Anthony J. Richardson ABSTRACT: Large planktivores require high-density prey patches to make feeding energetically viable.

Composition of Glycosaminoglycans in Elasmobranchs including Several Deep-Sea Sharks

Composition of Glycosaminoglycans in Elasmobranchs including Several Deep-Sea Sharks

Published on 24. March 2015 Composition of Glycosaminoglycans in Elasmobranchs including Several Deep-Sea Sharks: Identification of Chondroitin/Dermatan Sulfate from the Dried Fins of Isurus oxyrinchus and Prionace glauca Kyohei Higashi, Yoshiki Takeuchi, Ann Mukuno, Hideyuki Tomitori, Masaki Miya, Robert J. Linhardt, Toshihiko Toida ABSTRACT: Shark fin, used as a food, is a rich source of

Shifting elasmobranch community assemblage at Cocos Island

Shifting elasmobranch community assemblage at Cocos Island

Published online on 23. March 2015 Shifting elasmobranch community assemblage at Cocos Island – an isolated marine protected area Easton R. White, Mark C. Myers, Joanna Mills Flemming, Julia K. Baum ABSTRACT: Fishing pressure has increased the extinction risk of many elasmobranch (shark and ray) species. Although many countries have established no-take marine reserves, a

Intraguild predation and partial consumption of blue sharks by Cape fur seals

Intraguild predation and partial consumption of blue sharks by Cape fur seals

Published online on 16. March 2015 Intraguild predation and partial consumption of blue sharks Prionace glauca by Cape fur seals Arctocephalus pusillus pusillus C. Fallows, H.P. Benoît, N. Hammerschlag ABSTRACT: The top-down effects of predators on ecosystem structure and dynamics have been studied increasingly. However, the nature and consequence of trophic interactions between upper-trophic-level predators

First record of the electric ray Narcine leoparda in Ecuadorian waters

First record of the electric ray Narcine leoparda in Ecuadorian waters

Published online on 17. March 2015 First record of the electric ray Narcine leoparda (Batoidea: Torpediniforms: Narcinidae) in Ecuadorian waters A.F. Romero-Caicedo, J. Pincay-Espinoza, J. Palma-Chávez, M. Carrera-Fernández ABSTRACT: Six electric rays, Narcine leoparda, were caught off the coast of Manta, Ecuador between August 2013 and January 2014. These specimens represent the first record in

Tetronarce cowleyi, a new species of electric ray from southern Africa

Tetronarce cowleyi, a new species of electric ray from southern Africa

Published on 19. March 2015 Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) David A. Ebert, Diane L. Haas, Marcelo R. de Carvalho ABSTRACT: A new species of torpedo ray, Tetronarce cowleyi, sp. nov., is described from specimens collected from the southeastern Atlantic Ocean. The new species

Strongly directional and differential swimming behavior of an adult female white shark from Guadalupe Island

Strongly directional and differential swimming behavior of an adult female white shark from Guadalupe Island

Published in March 2015 Strongly directional and differential swimming behavior of an adult female white shark, Carcharodon carcharias (Chondrichthyes: Lamnidae) from Guadalupe Island, Mexico. Ramón Bonfil, Shannon O΄Brien ABSTRACT: We report on an adult female white shark tracked for 288 days and 7,100 km in the NE Pacific Ocean. The shark, tagged with a real-time

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